How many molecules of ATP and NADPH are utilised for the regeneration of one RuBP molecule.
1) 1 ATP and 1 NADPH 2) 1 NADPH only 3) 1 ATP only 4) 2 ATP and 2 NADPH... View Article
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Carboxylation in the C3 plants requires the following enzyme:
1) Kinase 2) RuBisCO 3) Nitrogenase 4) -ketoglutarate dehydrogenase Answer:2) RuBisCO Explanation: RuBisCO catalyses the first step of the Calvin... View Article
In Kranz anatomy, bundle sheath cells have
1) thick walls, no intercellular spaces and a large number of chloroplasts 2) thick walls, no intercellular spaces and no... View Article
What is the number of carbon atoms in phosphoenolpyruvate?
1) 2 2) 3 3) 4 4) 5 Answer:2) 3 Explanation: Phosphoenolpyruvate is a three-carbon compound. It is the primary... View Article
CAM helps the plant in _______.
1) secondary growth 2) primary growth 3) transporting minerals and nutrients from the soil 4) reducing loss of water by... View Article
Which of the following plants have the RuBisCO enzyme?
1) C4 plants 2) C3 plants 3) CAM plants 4) All of these Answer:4) All of these Explanation: RuBisCO enzyme... View Article
Select the correct match regarding absorption and movement of minerals.
1) Passive uptake – Slow, second phase of mineral uptake 2) Efflux – Inward movement of ions into a cell... View Article
Identify the correct set of elements, whose deficiency first occurs in older leaves.
1) N, S, Ca 2) N, Ca, Mg 3) Mg, S, Ca 4) N, K, Mg Answer:4) N, K, Mg... View Article
Which of the following nutrient elements cannot undergo remobilisation in plants?
1) Nitrogen 2) Potassium 3) Calcium 4) Magnesium Answer:3) Calcium Explanation: Calcium contributes to the structural makeup of the plant... View Article
Which of the following is incorrect regarding essential elements and their role in plants?
1) Chlorine: splitting of water during light reaction 2) Magnesium: Constituent of chlorophyll 3) Manganese: splitting of water during light... View Article
______ is needed for the synthesis of auxins.
1) Zinc 2) Molybdenum 3) Copper 4) Potassium Answer:1) Zinc Explanation: Zinc is needed for the biosynthesis of auxins. Zinc... View Article
The activator for enzymes RuBisCO and PEPcase is a
1) micronutrient 2) macronutrient 3) beneficial element 4) trace element Answer:2) macronutrient Explanation: Magnesium acts as an activator for enzymes... View Article
Which of the following is a criterion required for the essentiality of an element in plants?
1) The element must be directly involved in the metabolism of the plant 2) The element must be absolutely essential... View Article
The technique of hydroponics used for growing plants does not require
1) The element must be directly involved in the metabolism of the plant 2) The element must be absolutely essential... View Article
What is the correct sequence of steps in the cell cycle?
1) Karyokinesis, cytokinesis, interphase 2) Cytokinesis, karyokinesis, interphase 3) Interphase, karyokinesis, cytokinesis 4) Interphase, cytokinesis, karyokinesis Answer:3) Interphase, karyokinesis, cytokinesis... View Article
If the DNA content of a cell in G1 phase is 4C, what would be its DNA content in G2 phase?
1) 1C 2) 2C 3) 4C 4) 8C Answer:4) 8C Explanation: The order of interphase stages is G1 → S... View Article
Which two processes occur during the M phase of the cell cycle?
1) DNA replication and cell division 2) Karyokinesis and cytokinesis 3) Cell growth and karyokinesis 4) Cytokinesis and DNA replication... View Article
Pick the wrong statement about interphase from the following:
1) It is called the resting phase 2) There is no cellular growth 3) There is DNA replication 4) It... View Article
What best describes the cell in the G0 phase? They
1) are metabolically inactive 2) cannot divide forever 3) can re-enter G1 phase 4) both 1 and 3 are correct... View Article
An elaborate network of filamentous proteinaceous structures which help in the maintenance of the cell shape is called
1) cytoplasm 2) cytoskeleton 3) endoplasmic reticulum 4) Golgi complex Answer:2) cytoskeleton Explanation: The cytoskeleton is made up of microtubules,... View Article
